Books with title Silver Brumby whirlwind

His favourite mares having died of old age, Thowra goes north for a summer, where he courts Yuri, the firstborn daughter of the sun and the moon, Wurring and Ilinga. Will he be able to keep Yuri safe from the sons of the iron grey, and the furies of a killer storm? And what of the hundreds of brumbies that come to see if it is true that the great silver stallion really is alive? Will Thowra be able to reach his beloved Ramshead, far to the south, where he was born and where his mother's bones bleach, to keep his appointment with destiny?